VCode—Pervasive Data Transfer Using Video Barcode Xu Liu, David Doermann, Member, IEEE, and Huiping Li

刘涛涛在2008中国软件安全技术峰会上演讲用的PPT，关于软件加解密的技术趋势，提出了一种新的软件加密方式——扭曲变换加密技术（内详）。-Liu Taotao security technology at the 2008 China Summit presentation software used in PPT, on software encryption and decryption technology trends, proposed a new software encryptio

单片机应用系统设计 讲稿 主讲人：吕国芳，简明易懂。 -MCU apply system design paper, the teacher is Guo-Fang Liu . The paper is simple and easy to read.

基于NSCT的遥感影像道路提取算法研究_刘书丽-Remote sensing images based on NSCT road extraction algorithm _ Liu Shuli